二、完形填空(一)What is a CAT?CAT 1 for Computerized Axial Tomograp

二、完形填空
(一)
What is a CAT?CAT 1 for Computerized Axial Tomography (层面X线照相术).It is a special X-ray 2 that 3 a 360-degree picture of a small area of a patient’s baby.
Doctors use X rays to study and diagnose diseases and 4 within the body.X rays can 5 foreign objects inside the body or take pictures of some internal organs-if special substances as dyes or special liquids are added 6
The organs to be X-rayed.
A CAT scanner,7 uses a beam of X rays to give a cross-sectional view of a specific part of the body.A fine beam of X rays is scanned across the body and radiated around the patient from many different 8 .A computer analyzes the information from each angle and 9 a clear cross-sectional image on a screen.This image is then photographed for 10 use.Several cross-sections,taken one after another,can give clear “photos” of the 11
body or of any body organs.The newest CAT scanners can even give clear images of active,12 organs,just as a fast-action camera can “ 13 the action”,giving clear images of what appears only 14 to the eye.And because of the 360-degree pictures,CAT scans show 3- 15 views of organs is a manner that was once only 16 during surgery.
Too much exposure to X rays can cause skin burns,cancer or other 17 to the body.18 CAT scans actually don’t expose the patient to more radiation than conventional X rays do.CAT scans can also be done without 19 dyes into the patient,20 they are less risky than regular X-ray procedures.
1.[A]means [B]stands [C]asks [D]presents
2.[A]machine [B]installment [C]mechanism [D]equipment
3.[A]obtains [B]has [C]gain [D]receives
4.[A]destruction [B]injuries [C]harms [D]wounds
5.[A]stand [B]fix [C]place [D]locate
6.[A]for [B]up [C]of [D]to
7.[A]so [B]moreover [C]however [D]then
8.[A]perspective [B]angles [C]places [D]corners
9.[A]originates [B]supplies [C]produces [D]manufactures
10.[A]sooner [B]late [C]latest [D]later
11.[A]total [B]complete [C]entire [D]sum
12.[A]acted [B]moved [C]acting [D]moving
13.[A]stop [B]cut [C]cease [D]put
14.[A]mistily [B]snowy [C]dark [D]shiny
15.[A]sectional [B]respective [C]dimensional [D]spatial
16.[A]recovered [B]revealed [C]concealed [D]discovered
17.[A]cuts [B]damage [C]destruction [D]hurt
18.[A]Yet [B]Then [C]So [D]Also
19.[A]projecting [B]rejecting [C]injecting [D]objecting
20.[A]but [B]also [C]then [D]so